Time-controlled dead-locking device



Patented Apr. 20, 1920.

w :ME

R. C. LEWIS.

TIME CONTROLLED DEAD LOCKING DEVICE.

APPLICATION EILED DEC-16, 1919- UNITED STATES PATENT OFFICE. I

ROLLIN C. LEWIS, OF STAMFORD, CONNECTICUT, ASSIGNOR TO 'II-IE'YALE &TOWNE MANUFACTURING COMPANY, OF STAMFORD, CONNECTICUT.

TIME-CONTROLLED DEAD-LOCKING DEVICE.

Specification of Letters Patent.

Patented Apr. 20, 1920.

Application filed December 16, 1919. Serial No. 345,333.

. To all whom it may concern:

Be it known that I, RoLLrN C. Lnwis, a citizen of the United States, anda resident of Stamford, in the county of Fai rfield and State ofConnecticut, have invented certain new and useful Improvements inTime-Controlled Dead-Locking Devices; and I do hereby declare thefollowing to be a full, clear, and-exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

This invention relates to an improvement in time controlled dead lockingdevices for door locks and is designed particularly as an improvement.on the construction disclosed in my application'serial Number $1 1,100,

7 filed July 29th, 1919.

In the application above referred to, the construction is such that thedoor .maybe locked for a predetermined time against all keys of the lockexcept a master key used in connection with a clerkskey, and at theexpiration of such time be transformed by the time mechanism into a lockoperable by said clerks key alone.

The object of this invention is to provide means whereby the doggingmeans for the bolt can-be actuated by the dial mechanism of acombination lock, or a pin tumbler cylinder lock used interchangeablyand secured in place by the same means and-in'the same manner. I

A further obj ect-is to provide simple and easily operable means forproving thecorrectness of a changed combination.

With these and other objects in view my invention consists in the partsand combinations of parts as will be more fully explained and pointedout in the claims. I

In the accompanying drawings, Figure 1 is a view in rear elevation of alock embodying my invention the cover plate and portion of the timemechanism of the lock being omitted; Fig. 2 is a view partly in vertical1 section and partly in elevation of the construction shown in Fig. 1';Fig. 3 is a view in horizontal section through the dial mechanism; Fig.4 is a view in section of the holder for the tumblers, and also showingthe manner of securing the holder in place; Fig. 5 is a view in sectionshowing a pin tumbler lock substituted for the dial lock and Fig. 6 is aview in section through the same.

' clerks key.

10 represents a lock casing adapted to be I seemed to the inner face ofa'door, and adapted to carry the bolt, key actuated mechanism for.retracting the bolt and the time mechanism for controlling the deadlocking means.

The details of the time mechanism form no part of this invention henceonly such features thereof as cooperate with my lock are shown andherein referred to.

The bolt 11'is mounted in openings in the opposite sides of the casing10, so that either end thereof may be the locking end, and it may beshifted from its locked to its unlocked position when not deadlocked, bythe cam 12 of the pin tumbler lock 13, which is actuated by the clerkskey.

This boltis provided at its top edge with a slot 14 the side walls ofwhich are parallel for a short distance and then widen out, the

side walls 15 below the parallel portions being inclined as shown to beengaged by the cam 12 for shifting the bolt 11 longitudinally from itslocked to its unlocked position or vice versa.

Mounted in the housing 16 at the upper part of the casing 10, are thespring pressed dogs 17 and 18 one of which enters the slot 14 forlocking the bolt when the latter is projected at one side of the casing10, and the other cooperates with said slot for locking the bolt in itsunlocked position.

When the bolt is projected to the right as shown in Fig. 1, the dog 18enters the slot 14 for locking the bolt in its projected position, andit is lifted and removed from the said slot by its contact with the endof the cam 12, which as before explained is operated by the clerks key.hen the bolt is retracted, dog 17 drops into slot 14 and holds the boltagainst movement until actuated by the The bolt is also provided on itsupper edge, in a plane in front of the slot 14, with the recess 19 toreceive the lower end of the deadlocking plunger 20 also mounted formovement in the housing 16. This recess 19 is in front of the plane'ofthe dog 18 so that when the bolt is retracted the dog will ride on thetop of the bolt at therear'of said recess.

Plunger 20 is normally held in contact with the bolt by a spring, and itis provided on its rear face with an opening for a pin 21 on the rod 22,the said opening being sufficiently large to permit of a slight lateralor rocking movement of the rod 22 as will be hereinafter explained. Thisrod is bent to clear the time mechanism of the lock and is connectednear its lower end by a pin 23, to the lever 24 pivoted to theframe'carry ing the time mechanism of the look. This lever 24: which isof the bell crank variety,

"tially like the construction disclosed in my application above referredto.

This lock like the one described in my application above referred to, isprovided with means whereby the dead locking plunger can be disengagedfrom the bolt hy'a master mechanism operable at any time prior to thedisengagement of the, dead locking plunger fromvthe bolt by the timemechanism, thus leaving the latter free to be retracted by a clerks key,and this mechanism may be either a combination lock actuated by a dial,or a pin tumbler lock. In

Figs. 2 and 3 of the drawing I have shown a pin tumbler lock 13 forretracting and projecting the bolt and a dial combination lock forlifting plunger 20 in advance of the operation of the time mechanism,but the construction of the lock is such, as will be now explained, thateither a pin'tumbler lock similar to the lock 13, or a combination lockactuated by a dial such as is shown, maybe used without any change inthe construction of the lock,'or one mate substituted for the other inthe event'a change shouldbe necessary.

Secured by screws to the front face of the lock casing l0v is the holder28 which houses the tumblers 29. of a combination lock and which alsosupports and guides the dial spindle 30, by which the tumblers are. ac-

tuated in the wellknown manner.

Located in front of the holder 28 is the dish shaped plate 31 the edgeor periphery through said plate" and engagefeither the.

ring of a dial lock as shown in Fig. 3, or the cylinder of apin tumblerlock as shown in Fig. 5. In other words I use the same holding means orplate for both the upper lock 13 and the lower lock, thus-permitting meto use either adial combination lock or pin tumbler lock for releasingthe dogging plunger 20 in advance of the operation of the time lock.

In the construction shown in the drawlngs, the lower end of rod 22extends forwardly, then laterally toward the tumblers 29 and thenforwardly, this forwardly pro jecting end 3etwvhich constitutes thefence, being held in contact with the peripheries of the tumblers by thespring 35, hence when the gatings of the tumblers are in alinement thefence 3% will enter the gating simultaneously and then by turning thedial in the proper directions the fence and also the rod 22 of which thefence is a part, will be moved upwardly thus withdrawing plunger 20 fromits recess in the bolt '11 and leaving the latter free to be thenretracted by the clerks key.

When a dial combination lock is used,.

means must be provided for ascertaining or proving a new combination.The actual changing of the, combination is accomplished in thesame'manner as in other comblnation locks. After the combination has';been changed it should be proved and this may be done by mounting thelaterally bent portion of the rod 22 onthe shoulder 36,

cast integral with the casinglO so that by pressing with a finger at thepoint 37 on rod 22, the latter will tilt or rock on its fulcrum 36 andcarry its fence portion 3% against the outer tumbler of the series, orthe tunibler nearest the dial, and away from the inner tumblers. by thedial, the fence 3%, which .asv above stated bears against the outertumbler of the series will, as "the latter is turned enter the rod 22 isreleased thus permitting it to assume its normal position with its fenceparallel to peripheries of all the tumblers and in position to enter thegating in the said tumblers when the latter have been properly set up bythe manipulation of the dial. After the fence has entered the gatings, afurther turn of the dial turns the tumblers which lift the fence and therod 22 and thuswithdrawsthe plunger 20 from its recess in the bolt. 7

If it be desired to use a pin tumbler lock, as in Fig. 5, instead of thedial tumbler lock, all the tumblers but the driving tumbler 38 areremoved. and the connecting bar 39 of the pin tumbler lock 40 is enteredin the slot ll of the driving tumbler sleeve 42. This connects thedriving tumbler 38 of the lock with the pin tumbler lock so that .when'As'the tumblers are turned 7 the latter is actuated by its key the deadlocking plunger 29 will be disengaged from the bolt.

The time mechanism may be set to actuate the plunger 20 at any timewithin a certain period, and until that period has been reached and theplunger 20 withdrawn from its recess in the bolt, the latter will beabsolutely deadlocked against all keys, if the dial combination lock beused, or against all keys but the master key in the event a pin tumblerlock be substituted .for the dial combination lock, so that it will beimpossible for one having a clerks key to unlock the door while thelatter is deadlocked by the plunger 20, but the latter may be withdrawnfrom the bolt at any time by the correct manipulation of the dial of thecombination lock, or if a pin tumbler lock be used, by the use of theproper key for such lock, after which the bolt may be retracted by theclerks key.

It is evident that many slight changes might be resorted to in therelative arrangement of parts shown and described without departing fromthe spirit and scope of my invention. Hence I would have it understoodthat I do not wish to confine myself to the exact construction andarrangement of parts shown and described but,

Having fully described my invention what I claim as new and desire tosecure by Letters-Patent, is

1. In a lock, the combination of a casing, a bolt, key mechanism foractuating same, time controlled mechanism for deadlocking the boltagainst said key mechanism, and means for disengaging the timecontrolled deadlocking means from the bolt whereby the latter may thenbe actuated by its key mechanism, the said disengaging means beingsecured against the outer face of the door by screw bolts carried by aplate adjacent the front of the lock casing and engaging the rear faceof said disengaging means.

2. In a lock, the combination of a bolt,

key mechanism for actuating the same, time controlled mechanism fordeadlocking the bolt against said key mechanism, and means associatedtherewith and operable to interchangeably connect a dial combinationlock or a pin tumbler lock with said time controlled dogging meanswhereby the latter may be actuated to release thebolt prior to the timeset for its release by the time mechanism.

3. In a lock, the combination of a bolt, key mechanism for actuatingsame, a deadlocking plunger for the bolt, a dial and tumblers, and meansincluding the locking fence for the tumbler for disengaging the plun gerfrom the bolt, the said fence being mounted to be tilted sidewise toengage the tumblers and enter the gatings in the same as the latter aresuccessively brought into position and thus indicate to the operator thecombination on which the lock has been set.

4. In a lock, the combination of a bolt, key mechanism for actuating thesame, a dial and tumbler mechanism, a plunger for deadlocking the bolt,and means actuated by the tumbler mechanism for moving the deadlockingplunger out of engagement with the bolt, thus leaving the. latter freeto be actuated by its key mechanism.

5. In a lock, the combination of a bolt, key mechanism for actuating thesame, a dial combination look, a plunger for deadlocking the bolt and acombined tilting and longitudinally movable rod intermediate the plungerand tumblers and actuated by the Il)at1ter to disengage the plunger fromthe In testimony whereof I have signed this specification in thepresence of two subscribing witnesses.

ROLLIN G. LEWIS.

